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Finding the Fourth Proportional to 158,176.45, 218,283.46 and 86,556.45

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Solution

The fourth proportional to 158,176.45, 218,283.46 and 86,556.45 is: 119,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,176.45 : 218,283.46 = 86,556.45 : x
  2. Step 2: Convert to fraction form
    158,176.45/218,283.46 = 86,556.45/x
  3. Step 3: Cross multiply
    158,176.45x = 218,283.46 × 86,556.45
  4. Step 4: Simplify right side
    158,176.45x = 18,893,841,391.32
  5. Step 5: Solve for x
    x = 18,893,841,391.32/158,176.45
  6. Step 6: Final answer
    x = 119,447.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.